<%--
  Created by IntelliJ IDEA.
  User: 27761
  Date: 2024/10/11
  Time: 16:57
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@page import="java.sql.*" %>
<%@ page import="com.sun.deploy.cache.CachedJarFile" %>
<%request.setCharacterEncoding("utf-8");%>
<% String id=request.getParameter("stuid");%>
<% String stuBirthday=request.getParameter("stubirthday");%>
<% String stuClass=request.getParameter("stuclass");%>
<html>
<head>
    <title>修改结果</title>
    <%!ResultSet rs;%>
    <%
        String dbName = "studb";
        String userName="root";
        String userPasswd="123456";
        String url="jdbc:mysql://localhost/"+ dbName +"?user="+userName+"&password="+userPasswd;
        Class.forName("com.mysql.jdbc.Driver");
        Connection conn = DriverManager.getConnection(url);
        String sql ="update student set birthday=?,stuclass=?where number=?";
        PreparedStatement preparedStatement=conn.prepareStatement(sql);
        preparedStatement.setString(1,stuBirthday);
        preparedStatement.setString(2,stuClass);
        preparedStatement.setString(3,id);
        int result=preparedStatement.executeUpdate();
        if(result>0)
            out.print("<script type='text/javascript'>alert('修改成功');</script");
        else
            out.print("<script type='text/javascript'>alert('修改失败');</script");
        sql ="select *from student";
        rs=preparedStatement.executeQuery(sql);
    %>
</head>
<body>
<table border="1">
    <th colspan="4" style="font-size:x-large;alignment: center">学生信息表</th>
    <tr style="text-align: center">
        <td>学号</td>
        <td>姓名</td>
        <td>出生日期</td>
        <td>所在班级</td>
    </tr>
        <% while (rs.next()){  %>
    <tr style="text-align: center">
        <td><%=rs.getString(1)  %></td>
        <td><%=rs.getString(2)  %></td>
        <td><%=rs.getString("birthday")  %></td>
        <td><%=rs.getString("stuclass")  %></td>
    </tr>
        <%  }  %>
        <%
        rs.close();
       preparedStatement.close();
        conn.close();
    %>
</body>
</html>
